AC Milan went a point clear in Serie A on Saturday after Antonio Nocerino and a Zlatan Ibrahimovic penalty gave the champions a hard-earned 2-0 win over lowly Siena at the San Siro.
Juventus hit the woodwork three times and had a goal controversially disallowed as they were held 0-0 at Genoa on Sunday, their sixth draw in seven Serie A games leaving them further behind leaders AC Milan.
Unbeaten Juventus snatched a late goal to draw 1-1 at AC Milan in Serie A's top of the table clash on Saturday after the hosts had a goal disallowed when officials failed to spot the ball had crossed the line.
AC Milan shrugged off an unbelievable Robinho miss, and an interruption caused when teargas was thrown outside the ground, to record a 2-0 win at Genoa that took them to the top of Serie A on Friday.
Torino came from behind to beat Serie A leaders Juventus 2-1 in a pulsating derby on Sunday.